Kirby may refer to:

• Kirby Building, a skyscraper in Dallas, Texas, United States
• Kirby Hall, an Elizabethan country house near Corby, Northamptonshire, England
• Kirby House (disambiguation), various houses in England and the United States
• Kirby Sports Center, a sports arena in Easton, Pennsylvania, United States
• Kirby's Mill, an historic grist mill in Medford, New Jersey, United States

• Kirby Building Systems, a manufacturer of pre-engineered buildings
• Kirby Corporation, maritime equipment corporation
• Kirby Company, manufacturer of Kirby vacuum cleaners
• Kirby's Pig Stand, the first drive-in restaurant in the United States

• Kirby (character), the titular character of the Kirby game series
• Kirby, a character in Chicken Little
• Kirby, the title character of Rip Kirby, an American comic strip
• Sir Kirby, a character from Doc McStuffins
• Kirby Buckets, the titular character in the live-action series of the same name
• Kirby Reed, a character from the Scream franchise
• the Kirby family in the play You Can't Take It with You
• Officer Kirby, a character from Chip 'n Dale: Rescue Rangers
• Kirby Morris, a character from The Suite Life on Deck

• Kirby (series), a video game series
• "Kirby", a song from the album The Impossible Kid by Aesop Rock
• "Kirby" (Dynasty), an episode of the television series Dynasty
• Kirby: King of Comics, a 2008 biography by Mark Evanier

• Kirby, Arkansas, an unincorporated census-designated place
• Kirby, Indiana, an unincorporated community
• Kirby, Missouri, an unincorporated community
• Kirby, Montana, a populated place
• Kirby, Ohio, a village
• Kirby, Texas, a city
• Kirby, Vermont, a town
• Kirby, West Virginia, an unincorporated community
• Kirby, Wisconsin, an unincorporated community
• Kirby, Wyoming, a town
• Kirby Lake, Abilene, Texas, a man-made reservoir

• Kirby Cane, a village in Norfolk
• Kirby Cross, a village in Essex
• Kirby Grindalythe, a village in North Yorkshire
• Kirby-on-the-Moor, also known as Kirby, a village in North Yorkshire
• Kirby-le-Soken, a village in Essex
• Kirby Muxloe, a village and civil parish west of Leicester

• Kirby, Ontario, a hamlet in Canada
• Kirby Cone, a peak in Marie Byrd Land, Antarctica

• Kirby (surname), people with the surname
• Kirby (given name), people with the given name
  • Kirby Howell-Baptiste, English actor credited mononymously as Kirby since 2023
  • Kirby Lauryen, American singer-songwriter also known simply as Kirby

• Kirby College of Further Education, now part of Middlesbrough College, North Yorkshire, England
• Kirby High School (disambiguation), several schools in the United States

• Kirby calculus
• Kirby (cucumber), used for pickling
• Kirby 23, a sailboat designed by Bruce Kirby and produced in the mid-1980s
• Kirby 25, a sailboat designed by Bruce Kirby and produced in the mid-1980s
• Kirby Award, an award presented from 1985 to 1987 for achievements in comic books
• Kirby Forensic Psychiatric Center, a psychiatric hospital in New York City
• 51985 Kirby, an asteroid named after Jack Kirby
• Loteki Supernatural Being (1990–2007), also known as Kirby, the only dog to have won all three major international dog shows in the same year

• Kirby Krackle (or Kirby Dots), an artistic convention in comic books
• Kerby (disambiguation)
• Kirkby (disambiguation)